Staple holder



FIG. 1 is a front perspective view of the staple holder comprising the new design;

FIG. 2 is a front elevational view of the design of FIG. 1, where the back elevational view is a mirror image thereof;

FIG. 3 is a left elevational view of the design of FIG. 1, where the right elevational view is a mirror image thereof;

FIG. 4 is a top view of the design of FIG. 1;

FIG. 5 is a bottom view of the design of FIG. 1; and,

FIG. 6 is a front perspective view of a staple holder assembly showing a staple coupled to an end of the design of FIG. 1.

The features shown in broken lines depict environmental structure only and form no part of the claimed design. 

CLAIM The ornamental design for a staple holder, as shown and described. 